pyledriver/main.py

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#! /bin/python
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import os, time, signal, traceback
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import RPi.GPIO as GPIO
from queue import Queue
from multiprocessing.managers import BaseManager
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from auxilary import fallbackLogger
def printTrace(t):
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fallbackLogger(__name__, 'CRITICAL', '\n' + t)
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def clean():
GPIO.cleanup()
try:
stateMachine.__del__()
except NameError:
pass
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# TODO: this part is really wordy and makes me sad
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try:
logger.info('Terminated root process - PID: %s', os.getpid())
logger.stop()
except NameError:
pass
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except Exception:
printTrace(traceback.format_exc())
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try:
manager.__del__() # kill process 2
except NameError:
pass
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except Exception:
printTrace(traceback.format_exc())
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def sigtermHandler(signum, stackFrame):
logger.info('Caught SIGTERM')
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raise SystemExit
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class ResourceManager(BaseManager):
def __init__(self):
super().__init__()
self.register('Queue', Queue)
def __del__(self):
self.shutdown()
if __name__ == '__main__':
try:
os.chdir(os.path.dirname(os.path.realpath(__file__)))
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
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manager = ResourceManager()
manager.start() # Child process 1
loggerQueue = manager.Queue() # used to buffer logs
ttsQueue = manager.Queue() # used as buffer for TTS Engine
from sharedLogging import MasterLogger
logger = MasterLogger(__name__, 'DEBUG', loggerQueue)
from notifier import criticalError
from stateMachine import StateMachine
stateMachine = StateMachine()
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# TODO: segfaults are annoying :(
#~ signal.signal(signal.SIGSEGV, sig_handler)
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signal.signal(signal.SIGTERM, sigtermHandler)
while 1:
time.sleep(31536000)
except Exception:
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t = traceback.format_exc()
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try:
criticalError(t)
except NameError:
pass
try:
logger.critical(t)
except NameError:
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printTrace(t)
finally:
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clean()